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June 4, 1929. WAGNER 1,715,441

GEAR SHIFTING MECHANISM Filed Dec. 18, 1926 I5 Sheets-Sheet 1 L 1 j :i 3 m I I v QMVG/VE J2 /J J6 flazfir 6; 9 -25 June 4, 1929. V WAGNER 1,715,441

GEAR SHIFTING MECHANISM Filed Dec. 18, 1926 3 Sheets-Sheet 2 June 4, 1929. WAGNER 1,715,441

GEAR SHIFTING MECHANISM Filed Dec 18, 1926 3 Sheets-Sheet 5 gwwmtm Patented June 4, 1929.

UNITED STATES PATENT OFFICE.

ALBERT G. WAGNER, OF CINCINNATI, OHIO, ASSIGNOR TO THE WEMB COMPANY, OF

. CINCINNATI, OHIO, A CORPORATION OF OHIO.

GEAR-SHIFTING MECHANISM.

Application filed December 18, 1926.

The primary object of this invention is to provide a novel mechanism whereby the transmission gearing of an automobile may be set for adesircd speed through the ordinary clutch pedal movement, the usual hand shift lever and all manually operated presetters or selectors being dispensed with and the operator of the vehicle having his hands free for other purposes at all times.

The invention also has for an object the provision of a gear-selector mounted on the vehicle chassis in advance of the clutch pedal, and elements mounted on and movable with the clutch pedal cooperating with the selector to actuate intermediate connections and effect the required movement of the gearshifting slide.

These and other objects which Wlll hereina'tter incidentally appear are attained in such an apparatus as is illustrated in the accompanying drawings, and the invention resides in certain novel features which will be hereinafter first fully described and then more particularly pointed out in the appended claims. 7

In the drawings:

Fig. 1 a side elevation of: a portion of an automobile engine, thetransmission case,

and clutch pedal with the invention applied.

thereto, the transmission gears by dotted lines;

F 1g. 2 1s a plan view with the clutch pedal being shown removed and the selector bar in horizontal a portion of the engine, 2 the clutch case,

and 3 the transmission case, shift bars or rods 4 being slida-bly mounted in the case 3 and equipped with gear shitting forks or yoh'es in the usual manner. Ordinarily, in present practice, the slides or slnit bars are operated by a hand lever'mouuted in a box 5 on the transmission case, but by my inven- Serial No. 155,685.

tion the hand lever is dispensed with and the top of the box isclosed by a cover 6 While a bearing sleeve 7 is formed on the side of the box and projects laterally there- ,wardly projecting bracket 11, which presents two parallel bars 12 and 13 in advance of the bar 9, the bar 12 being longer than the bar 13 and having an upstanding holding plate 14 rigidly secured upon its front end portion. Bearing lugs 15 are provided on the bars 12 and 13 and carry a fulcrum pin 16 on which rockers 17. are loosely mounted. The upper end of each rocker is formed into a forked head 18, for a purpose which will presently appear, and. to the lower end of each rocker is pivoted the front end of a pitman or connecting rod 19 which has its rear end pivoted to the lower end of a crank 20. The outer crank 20, by which term is meant the crank nearer the chassis side bar, is secured to the outer end of a shaft 21 extending axially through the sleeve 7, while the inner crank 20 is secured to the outer end of a hollow shaft 22, which fits around the shaft 21 and within the sleeve 7, as shown clearly in Fig. 6. On the inner ends of the sha lt-s 21, 22, are shifting cranks or fingers 23 engaged with the respective slides 1. The forked heads 18 are each provided with lateral studs or lugs 24, at the extremities of the forks, the lugs on the inner fork projecting outwardly and the lugs on the outer fork projecting inwardly, as shown in Figs. 2 and 5. Mounted loosely on the fulcrum rod or pin 16 between the forked heads 18 is the selector which consists of a body plate'25 and an arm 26 extending upwardly and for wardly and connected with the upper forward portion of the body plate by a shoulder member 27, it being noted at this point that the forward. lugs or studs 24 project into the path of the shoulder member and nearly meet. The body plate 25 extends below as well as above the pin 16 and to its lower end is secured one end of a contractile spring 28 which has its opposite end secured to the Rigidly secured on 'ing movement imparted to the gear movement of the bell crank and the parts assume the position shown in 3, the point 4-2 sliding off of stud 31, the selector arm having been pushed during this rocking; action into engagement with the plate 14. It will be noted that as the penal continues its downward stroke to complete th moveinent, point 42 can slide off of stud 3i as the selector arm 36 free to move outvardly any amount required to clear the point 42 and the stud. The selector bar has been moved so that the stud 29 engages one of the sockets and thereby locks the bar in its inoperative position shown in. Fig. 3, and the bar will remain in this inoperative position until the pedal is actuated to return the pears to the neutral position. Now, when the bell crank l]. was rocked upward relative to the treadle, indicated in llig". 3, the too was swung forwardly and pushed the dog or pusher 46 forwardly so that, as the movement of the pedal continue..:, the free end of the dog en gagged the forward. lug 2-1- on the outer head. 18 and rocked the head shill; shaft 21. hen the pedal tl 'iujives rearwardly, the dog and bell crank will he 1 2d and will resume their i'iorinal positions cin to the lines of the pedal, as shown by doth lines in Fig. 3. Movement of the pedal w' then have no effect to cause engzugeinent of the dog or bell crank with other parts and, of course, will not cause any :uldi.li .nal shifting of the gears. hen the dog; or pusher 1-6 wasswung forward as above de scribed, it assumed a position approaching the horizontal and cleared the rear lun ill. It however, the upper notch 43 in the hell cranl-c had en d5 would not have swung;- so far forward and the dog; would have huu in a nearly vertical position, so that the award and dmvmvard movement of the pedal would have raised the dog; to engage the rear stiul 2% and press downwardly thereon. As a. result, the-head 18 would have been rocked r.arwar and the extension 17 swung for vard to set the g'cz low speed ahead.

If it be desired to change SPQQtl, the pedal is pushed forwan'l av full stroke, the thugs and bell cranks being inactive since the selector is in the position shown in. Fig. 3. As the pedal reaches the position of the lil e A, the am member 39 caused to bear upon the extension 53 and roving the same do\vn wardly, the selector being released from the draw.

1" wed the stiul 31 the hooh end inc nt in one direction, the shifting as described, the rear edge of the shoulder member 27 impinged against both 'liorwzu'd studs 2% and rocked the heads 18 to the neutral position shown in Figs. 1 and i, and it will be noted that if a head should be in a rearward position beyond the range of the selector, the forward edge of the cam member vill engage the forward stud on the head and set the head in neutral. It will also he noted that when he heads in neutral position, the forwa .uds will. be disposed in a higher plane than the rear stats so that if the dog and bell crank set for engagement with a forv ard stud inner stud and a slightimpact or clic; bein fe l in the chaulieufis foot as the tongue on the end of the hell crank s vins'r up against the stud. This action pr i the upper notch in the end of the hell crank "l t'" a ll tl A "l l l u to Lit, suu so .iar, ii. u. P\( )0 an pushed h 1 aid to about the position of the line D, the inner head 18 will he roc the gears shiilted to hi 'h speed. I. instead or pushing the pedal forward, the slow "ard movement he continued, a second (flick l l 1 f l t l t l mi .ie .011 one 0 lie s at 11.4 on stat, arm 26 snapping down against the lower wall of its lower notch on the oell craiuu 50,

will effect shifting of the gears to at i All. in second speed. Further rea-r .vard move- It is of course obvious that when the desired click is felt, rearward movement of the clutch pedal is at once stopped and the pedal pushed forwardly to effect the shift.

Having shifted, a rearward movement .nerely piac the clutch into engagement to permit running of the car.

It is also noteworthy that the selecting mechanism is disengaged from the clutch operating nieniber alter a shift is made and also after the gears are placed in neutral. That is to say, the shifter is always set to neutralize the gears when in niesh, as the selector is out of engagen'lent when the gears are in mesh and when the gears are in neutral.

All selecting and shifting is accomplished by the usual movements oitheelutch pedal, the selecting being acconuilished by a moveby a movement another direction and the clutching by a repetition of the movement W l il t d tl eel t 1 v. 1 10.1 e cc e 1e ee 1011. or goals.

Having thus described my invention, What ed and. I

lOO

- ch pedal, means operable posite direc ion to actuate the gear-shifting; niechnnisin and setthe gears ratio, s: il letter means being inoperative during; repetition of the first movement of the pedal.

The combination oi? a gear shitting mechanism, a clutch pedal mounted for arcnete movement tl'irough e. singie plane, means actuated by the pedal during a portion or said movement for r ing the gear shitting mechanism in neural, and means separate "from said pedal and controlled portion of .eid movement thereby durin for se ect-ivclymoving the gear shitting nieclun ism from neutral to set the geirs 1.1

Working ratio.

i. The combination with r. gear mechanism. clutcn pedal mounted for to movement through a single plane, and norms in cl riding a member separate from the pedal and L ctueteo. thereby during niov nient thereof to selectively the 5; n1" V ing mechanism, for subsequentshifting oi the gears.

The combination With a gear shittin f3 nicchs; sin, a clutch pedal mounted for swinging mwcment through a singie olzine,

Us...) actuated by the pedal during movement th of t nicchz iisin, tor subseqt s' the goers, and means for setting the g-czu: shiiting; mechanism in neut ail upon extreme movement of the pedei in one direction.

6. he ceiubinstion oi? a. gear-shitting niechzinisnu a clutch pedal, setters carried N. the pedal. a selector arranged to cooper- 1 upon one movement of the. pcdzil to select at her combination and nice; acting upon it reverse movement of pedal to actuate the go: r-shiilting mechthe in the selected combiill LO ELL L'" ectively Qhe combination o a mechanism, clutch pods sette the pedal, :1. lector errengec.

t. he s tter; vuponone movement ol nzitio nent ir wil. be moved in the selected to and lock in an inoperative position during the setting movement oi the pedal.

8. The combination of: it gear-shitting lnechunsin e clutch pedal setters curried by the pedal a selector arranged to cooperate 7 Wits the s rs upon one movementot the pedal to se a. gem combination and means "ting; upon it reverse movement oi the sm i in the selected conibunui i, e 1 V 3 l J. ier by the selector Wih we moved [0 an inoperative position during vcnient oi? the pedal. and means ng the selector and returning it to isition.

of o. gear-shifting a. rocking head, d 1r varied by the adjacent the pedal the setter be said th e for selec" nechzrnisin from neutral to at MiJiHZttlOIl of a gcar-si1iiting niecumiisni inclui'ling a rocking head, a. prothe side of the head. a 5 utch ped :11, bar carried by the pedal and having lene of the bar, the selector having an extension arranged to be engaged by the cam member of the setter bar whereby the selector will be moved to operative position end the gear-shifting n echenisin set in and means cooperating with the setend the selector for selectively :rc rocking head and niovin the inccl enisn'i from neutral posi- 10 i, the selector being simultaneously moved 0 inoperative position.

11. The. combination of :1 n echmisnn a clutch pedal setting device carried by the pedal and arranged to en and actuate the gear-shitting mechzinisni. a selector echipted to adjust the sctting); device for engagement vith the gemshiiting niechzznisn e l-:ceper plate, adapted to engage and retain the selector in inoperative position upon 1'\1-(' V(}1Kfli' oi the tings; device into cinqeo oiucnt with the groan shifting mechanism, and menus for relczising the selector and returning it to operative position.

12. The combination of near-shitting iechanisni, a clutch-pedal. se lino; niech liSlil carried by the pedal for actuating the er rshifting gear-shifting mechanism, a selector cooperating With the set 5 mechanism to pre determine the mo ense of e shift ing mechanism, and means for moving the selector into operative relation to the setting mechanism.

13. The combination of a gear shifting mechanism, a clutch pedal, setting mech anism carried thereby, and a selector cooperating with said setting mechanism to predetermine movements of the gear shifting mechanism, means to move the selector into operative relation to the setting mechanism, said. setting mechanism being adapted to move the selector out of said operative re lation upon further movement of the pedal.

let. The combination of gear shifting mechanism, a clutch pedal, setting mechanism carried thereby, and a selector cooperating with said setting mechanism to predetermine movements of the gear shifting mechanism, means to move the selector into operativerelation to the setting mechanism, said setting mechanism being adapted to move the selector out of said operative relation upon further movement of the pedal, and means to hold said selector out of operative relation to the setting mechanism.

15. The combination of gear shifting mechanism, a clutch pedal, means controlled by said pedal for actuating the gear shifting mechanism, a selector cooperating with said. means to predetermine the movement of 5 the gear shifting mechanism, and means for moving the selector into and out of operative relation to the setting mechanism.

10. The combination of a gear-shifting t mechanism including a rocking head having a plurality of. projections on one side, a

clutch pedal, a dog carried by the pedal,

and actuating means on the pedal for said dog, and a selector coacting with said actuating means to move same and thereby to place said dog :in engagement with one of the projections'on the rocking head to effect a predetermined movement of the gear-shift ing mechanism.

17. The con'ibination. of gear-shifting mechanism, a clutch pedal, a dog carried by the pedal to actuate the gear-shitting mechanism, and means for imparting a variable throw to the dog whereby to determine the movement of the gear-shifting mechanism.

18. The combination of gear-shifting mechanism, a clutch pedaha dog carried by the pedal to actuate the gear-shifting mechanisn'i, a bell-crank mounted on the pedal and engaging the dog, and means for rock ing the bell-crank to arrange the dog for selective engagement with the gear-shifting mech ani sm.

19. The combination of gear-shitting mechanism, a. clutch pedal, a dog carried by the pedal, a bell-crank mounted on the pedal and having one end in engagement with the dog, means yieldably maintaining the engagement between the bell-crank and the dog, and means variably engaging the free end of the bell-crank for selectively effecting engagement between the dog and the gear shifting mechanism.

20. The combination of a gear-shifting mechanism, a clutch pedal, a setting device carried by the pedal and engageable with the gear-shifting mechanism, and a se lector bar adjacent the pedal and having means engageable with the setting device for elfecting predetermined engagement of the setting device with the gear-shifting mechanism.

21. The combination of a gear-shitting mechanism, a clutch pedal, a setting means carried by the pedal and engageable with the gear-shitting mechanism to actuate the same and including an element having a plurality of notches in its end, and a selector bar having a stud engageable with either of said notches whereby to control the move ment of the gear-shifting mechanism.

22. The combination of a gear-shifting mechanism, a clutch pedal, a selector bar arranged adjacent the pedal, studs on the opposite sides of the selector bar, one of said studs being in advance of another, and setting mechanism carried by the pedal and including elements disposed at opposite sides of the selector bar riding under and selectively engageable with the studs on said bar whereby to control. the movement of the gear-shitting mechanism.

23. The combination of a gear shifting mechanism, means to select a gear combination and to set the gears in the selected combination, a clutch pedal positioned to operate said means for gear selection as the clutch is closed and to operate said means for gear setting as the clutch is opened.

24L. In an automobile having a gear shifting mechanism and a control pedal, means, comprising a gear selector and setter, to connect said mechanism and said pedal and mo 'able by said pedal thereby to select a desired gear ratio upon movement of the pedal in one direction and to shift said gears upon movement of the pedal in another direction.

25. The coi'nbination of a gear shifting mechanism, a clutch pedal mounted for arc-uate movement through a single plane, and means actuated by the pedal during a portion of said movement thereof to selectively set the gear shifting mechanism, for later shifting operation.

26. The combination of a gear shitting mechanism, including a rocking head having a plurality of projections on one side, a clutch pedal mounted for arcuate movement through a single plane, a dog carried by the pedal, and means for causing the dog to engage one of the projections on the rocking head during said movement of the pedal thereby to effect a predetermined movement of the gear shifting mechanism.

27. The combination of gear shitting member and gear setters mounted on said operating memberfor movement therewith into engagement with said bar-and said gear shifting member, said setters also being mounted for movement independent of movement of said member, said' bar coo-perating with the setters upon engagement therewith to effect a predetermined movement of said gear shifting member.

In testimony whereof I hereunto afiix my signature.

ALBERT G. XVAGNER. 

